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HtmlElement.OffsetRectangle Property

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Gets the location of an element relative to its parent.

public:
 property System::Drawing::Rectangle OffsetRectangle { System::Drawing::Rectangle get(); };
public System.Drawing.Rectangle OffsetRectangle { get; }
member this.OffsetRectangle : System.Drawing.Rectangle
Public ReadOnly Property OffsetRectangle As Rectangle

Property Value

Rectangle

The x- and y-coordinate positions of the element, and its width and its height, in relation to its parent.

If an element's parent is relatively or absolutely positioned, OffsetRectangle will return the offset of the parent element. If the element itself is relatively positioned with respect to its parent, OffsetRectangle will return the offset from its parent.

Examples

The following code example shows how OffsetParent and OffsetRectangle differ for span1, span2 and span3:

<HTML>  
    <BODY id="documentBody">  

        <DIV id="div1">  
            <SPAN id="span1">Placeholder text 1.</SPAN>  
        </DIV>  

        <DIV id="div2" style="position:relative;top:100px;left:100px;">  
            <SPAN id="span2">Placeholder text 2.</SPAN>  
        </DIV>  

        <DIV id="div3" style="position:absolute;top:200px;left:200px;">  
            <DIV id="div4" style="position:relative;top:100px;left:100px;">  
                <SPAN id="span3">Placeholder text 3.</SPAN>  
            </DIV>  
        </DIV>  

    </BODY>  
</HTML>  

private void GetOffsets()
{
    String str = "";
    HtmlDocument doc = webBrowser1.Document;

    foreach (HtmlElement elem in doc.GetElementsByTagName("SPAN"))
    {
        str += "OffsetParent for " + elem.Id + " is " + elem.OffsetParent.Id;
        str += "; OffsetRectangle is " + elem.OffsetRectangle.ToString() + "\n";
    }

    MessageBox.Show(str);
}

Private Sub GetOffsets()
    Dim Str As String = ""
    Dim Doc As HtmlDocument = WebBrowser1.Document

    For Each Elem As HtmlElement In Doc.GetElementsByTagName("SPAN")
        Str &= "OffsetParent for " & Elem.Id & " is " & Elem.OffsetParent.Id
        Str &= "; OffsetRectangle is " & Elem.OffsetRectangle.ToString() & vbCrLf
    Next

    MessageBox.Show(Str)
End Sub

Remarks

Elements can be positioned on an HTML page in one of three ways:

  • Default flow positioning.

  • Relative positioning, in which the element is offset by a fixed amount relative to its parent.

  • Absolute positioning, in which the element is given a fixed coordinate position relative to the upper-left corner of the document.

For more information about element positioning in HTML, see About Element Positioning.

Applies to

See also